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ITPA_ARATH
ID   ITPA_ARATH              Reviewed;         206 AA.
AC   Q8L968; Q56ZI5; Q9SVP0;
DT   19-OCT-2011, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2002, sequence version 1.
DT   03-AUG-2022, entry version 121.
DE   RecName: Full=Inosine triphosphate pyrophosphatase {ECO:0000255|HAMAP-Rule:MF_03148};
DE            Short=ITPase {ECO:0000255|HAMAP-Rule:MF_03148};
DE            Short=Inosine triphosphatase {ECO:0000255|HAMAP-Rule:MF_03148};
DE            EC=3.6.1.9 {ECO:0000255|HAMAP-Rule:MF_03148};
DE   AltName: Full=Non-canonical purine NTP pyrophosphatase {ECO:0000255|HAMAP-Rule:MF_03148};
DE   AltName: Full=Non-standard purine NTP pyrophosphatase {ECO:0000255|HAMAP-Rule:MF_03148};
DE   AltName: Full=Nucleoside-triphosphate diphosphatase {ECO:0000255|HAMAP-Rule:MF_03148};
DE   AltName: Full=Nucleoside-triphosphate pyrophosphatase {ECO:0000255|HAMAP-Rule:MF_03148};
DE            Short=NTPase {ECO:0000255|HAMAP-Rule:MF_03148};
GN   OrderedLocusNames=At4g13720; ORFNames=F18A5.110;
OS   Arabidopsis thaliana (Mouse-ear cress).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   rosids; malvids; Brassicales; Brassicaceae; Camelineae; Arabidopsis.
OX   NCBI_TaxID=3702;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Columbia;
RX   PubMed=10617198; DOI=10.1038/47134;
RA   Mayer K.F.X., Schueller C., Wambutt R., Murphy G., Volckaert G., Pohl T.,
RA   Duesterhoeft A., Stiekema W., Entian K.-D., Terryn N., Harris B.,
RA   Ansorge W., Brandt P., Grivell L.A., Rieger M., Weichselgartner M.,
RA   de Simone V., Obermaier B., Mache R., Mueller M., Kreis M., Delseny M.,
RA   Puigdomenech P., Watson M., Schmidtheini T., Reichert B., Portetelle D.,
RA   Perez-Alonso M., Boutry M., Bancroft I., Vos P., Hoheisel J.,
RA   Zimmermann W., Wedler H., Ridley P., Langham S.-A., McCullagh B.,
RA   Bilham L., Robben J., van der Schueren J., Grymonprez B., Chuang Y.-J.,
RA   Vandenbussche F., Braeken M., Weltjens I., Voet M., Bastiaens I., Aert R.,
RA   Defoor E., Weitzenegger T., Bothe G., Ramsperger U., Hilbert H., Braun M.,
RA   Holzer E., Brandt A., Peters S., van Staveren M., Dirkse W., Mooijman P.,
RA   Klein Lankhorst R., Rose M., Hauf J., Koetter P., Berneiser S., Hempel S.,
RA   Feldpausch M., Lamberth S., Van den Daele H., De Keyser A., Buysshaert C.,
RA   Gielen J., Villarroel R., De Clercq R., van Montagu M., Rogers J.,
RA   Cronin A., Quail M.A., Bray-Allen S., Clark L., Doggett J., Hall S.,
RA   Kay M., Lennard N., McLay K., Mayes R., Pettett A., Rajandream M.A.,
RA   Lyne M., Benes V., Rechmann S., Borkova D., Bloecker H., Scharfe M.,
RA   Grimm M., Loehnert T.-H., Dose S., de Haan M., Maarse A.C., Schaefer M.,
RA   Mueller-Auer S., Gabel C., Fuchs M., Fartmann B., Granderath K., Dauner D.,
RA   Herzl A., Neumann S., Argiriou A., Vitale D., Liguori R., Piravandi E.,
RA   Massenet O., Quigley F., Clabauld G., Muendlein A., Felber R., Schnabl S.,
RA   Hiller R., Schmidt W., Lecharny A., Aubourg S., Chefdor F., Cooke R.,
RA   Berger C., Monfort A., Casacuberta E., Gibbons T., Weber N., Vandenbol M.,
RA   Bargues M., Terol J., Torres A., Perez-Perez A., Purnelle B., Bent E.,
RA   Johnson S., Tacon D., Jesse T., Heijnen L., Schwarz S., Scholler P.,
RA   Heber S., Francs P., Bielke C., Frishman D., Haase D., Lemcke K.,
RA   Mewes H.-W., Stocker S., Zaccaria P., Bevan M., Wilson R.K.,
RA   de la Bastide M., Habermann K., Parnell L., Dedhia N., Gnoj L., Schutz K.,
RA   Huang E., Spiegel L., Sekhon M., Murray J., Sheet P., Cordes M.,
RA   Abu-Threideh J., Stoneking T., Kalicki J., Graves T., Harmon G.,
RA   Edwards J., Latreille P., Courtney L., Cloud J., Abbott A., Scott K.,
RA   Johnson D., Minx P., Bentley D., Fulton B., Miller N., Greco T., Kemp K.,
RA   Kramer J., Fulton L., Mardis E., Dante M., Pepin K., Hillier L.W.,
RA   Nelson J., Spieth J., Ryan E., Andrews S., Geisel C., Layman D., Du H.,
RA   Ali J., Berghoff A., Jones K., Drone K., Cotton M., Joshu C., Antonoiu B.,
RA   Zidanic M., Strong C., Sun H., Lamar B., Yordan C., Ma P., Zhong J.,
RA   Preston R., Vil D., Shekher M., Matero A., Shah R., Swaby I.K.,
RA   O'Shaughnessy A., Rodriguez M., Hoffman J., Till S., Granat S., Shohdy N.,
RA   Hasegawa A., Hameed A., Lodhi M., Johnson A., Chen E., Marra M.A.,
RA   Martienssen R., McCombie W.R.;
RT   "Sequence and analysis of chromosome 4 of the plant Arabidopsis thaliana.";
RL   Nature 402:769-777(1999).
RN   [2]
RP   GENOME REANNOTATION.
RC   STRAIN=cv. Columbia;
RX   PubMed=27862469; DOI=10.1111/tpj.13415;
RA   Cheng C.Y., Krishnakumar V., Chan A.P., Thibaud-Nissen F., Schobel S.,
RA   Town C.D.;
RT   "Araport11: a complete reannotation of the Arabidopsis thaliana reference
RT   genome.";
RL   Plant J. 89:789-804(2017).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC   STRAIN=cv. Columbia;
RA   Totoki Y., Seki M., Ishida J., Nakajima M., Enju A., Kamiya A.,
RA   Narusaka M., Shin-i T., Nakagawa M., Sakamoto N., Oishi K., Kohara Y.,
RA   Kobayashi M., Toyoda A., Sakaki Y., Sakurai T., Iida K., Akiyama K.,
RA   Satou M., Toyoda T., Konagaya A., Carninci P., Kawai J., Hayashizaki Y.,
RA   Shinozaki K.;
RT   "Large-scale analysis of RIKEN Arabidopsis full-length (RAFL) cDNAs.";
RL   Submitted (MAR-2005) to the EMBL/GenBank/DDBJ databases.
RN   [4]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC   STRAIN=cv. Columbia;
RA   Shinn P., Chen H., Kim C.J., Ecker J.R.;
RT   "Arabidopsis ORF clones.";
RL   Submitted (APR-2006) to the EMBL/GenBank/DDBJ databases.
RN   [5]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RA   Brover V.V., Troukhan M.E., Alexandrov N.A., Lu Y.-P., Flavell R.B.,
RA   Feldmann K.A.;
RT   "Full-length cDNA from Arabidopsis thaliana.";
RL   Submitted (MAR-2002) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Pyrophosphatase that hydrolyzes non-canonical purine
CC       nucleotides such as inosine triphosphate (ITP), deoxyinosine
CC       triphosphate (dITP) or xanthosine 5'-triphosphate (XTP) to their
CC       respective monophosphate derivatives. The enzyme does not distinguish
CC       between the deoxy- and ribose forms. Probably excludes non-canonical
CC       purines from RNA and DNA precursor pools, thus preventing their
CC       incorporation into RNA and DNA and avoiding chromosomal lesions.
CC       {ECO:0000255|HAMAP-Rule:MF_03148}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a ribonucleoside 5'-triphosphate + H2O = a ribonucleoside 5'-
CC         phosphate + diphosphate + H(+); Xref=Rhea:RHEA:23996,
CC         ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:33019,
CC         ChEBI:CHEBI:58043, ChEBI:CHEBI:61557; EC=3.6.1.9;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:23997;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a 2'-deoxyribonucleoside 5'-triphosphate + H2O = a 2'-
CC         deoxyribonucleoside 5'-phosphate + diphosphate + H(+);
CC         Xref=Rhea:RHEA:44644, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:33019, ChEBI:CHEBI:61560, ChEBI:CHEBI:65317; EC=3.6.1.9;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:44645;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H2O + ITP = diphosphate + H(+) + IMP; Xref=Rhea:RHEA:29399,
CC         ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:33019,
CC         ChEBI:CHEBI:58053, ChEBI:CHEBI:61402; EC=3.6.1.9;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:29400;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=dITP + H2O = dIMP + diphosphate + H(+); Xref=Rhea:RHEA:28342,
CC         ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:33019,
CC         ChEBI:CHEBI:61194, ChEBI:CHEBI:61382; EC=3.6.1.9;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:28343;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H2O + XTP = diphosphate + H(+) + XMP; Xref=Rhea:RHEA:28610,
CC         ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:33019,
CC         ChEBI:CHEBI:57464, ChEBI:CHEBI:61314; EC=3.6.1.9;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:28611;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC       Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC       Note=Binds 1 divalent metal cation per subunit; can use either Mg(2+)
CC       or Mn(2+). {ECO:0000255|HAMAP-Rule:MF_03148};
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_03148}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_03148}.
CC   -!- SIMILARITY: Belongs to the HAM1 NTPase family. {ECO:0000255|HAMAP-
CC       Rule:MF_03148}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=CAB36836.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305};
CC       Sequence=CAB78414.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305};
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DR   EMBL; AL035528; CAB36836.1; ALT_SEQ; Genomic_DNA.
DR   EMBL; AL161537; CAB78414.1; ALT_SEQ; Genomic_DNA.
DR   EMBL; CP002687; AEE83317.1; -; Genomic_DNA.
DR   EMBL; AK220980; BAD94569.1; -; mRNA.
DR   EMBL; AK221218; BAD93787.1; -; mRNA.
DR   EMBL; BT025040; ABE02415.1; -; mRNA.
DR   EMBL; AY088611; AAM66934.1; -; mRNA.
DR   PIR; T05241; T05241.
DR   RefSeq; NP_567410.1; NM_117446.3.
DR   AlphaFoldDB; Q8L968; -.
DR   SMR; Q8L968; -.
DR   STRING; 3702.AT4G13720.1; -.
DR   iPTMnet; Q8L968; -.
DR   PaxDb; Q8L968; -.
DR   PRIDE; Q8L968; -.
DR   ProteomicsDB; 250641; -.
DR   EnsemblPlants; AT4G13720.1; AT4G13720.1; AT4G13720.
DR   GeneID; 827006; -.
DR   Gramene; AT4G13720.1; AT4G13720.1; AT4G13720.
DR   KEGG; ath:AT4G13720; -.
DR   Araport; AT4G13720; -.
DR   TAIR; locus:2119420; AT4G13720.
DR   eggNOG; KOG3222; Eukaryota.
DR   HOGENOM; CLU_082080_1_1_1; -.
DR   InParanoid; Q8L968; -.
DR   PhylomeDB; Q8L968; -.
DR   PRO; PR:Q8L968; -.
DR   Proteomes; UP000006548; Chromosome 4.
DR   ExpressionAtlas; Q8L968; baseline and differential.
DR   Genevisible; Q8L968; AT.
DR   GO; GO:0005737; C:cytoplasm; IBA:GO_Central.
DR   GO; GO:0035870; F:dITP diphosphatase activity; IEA:RHEA.
DR   GO; GO:0036218; F:dTTP diphosphatase activity; IEA:UniProtKB-EC.
DR   GO; GO:0036220; F:ITP diphosphatase activity; IEA:RHEA.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0035529; F:NADH pyrophosphatase activity; IEA:UniProtKB-EC.
DR   GO; GO:0047429; F:nucleoside-triphosphate diphosphatase activity; IBA:GO_Central.
DR   GO; GO:0000166; F:nucleotide binding; IEA:UniProtKB-KW.
DR   GO; GO:0036222; F:XTP diphosphatase activity; IEA:RHEA.
DR   GO; GO:0009204; P:deoxyribonucleoside triphosphate catabolic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0009143; P:nucleoside triphosphate catabolic process; IBA:GO_Central.
DR   GO; GO:0009117; P:nucleotide metabolic process; IEA:UniProtKB-KW.
DR   CDD; cd00515; HAM1; 1.
DR   Gene3D; 3.90.950.10; -; 1.
DR   HAMAP; MF_03148; HAM1_NTPase; 1.
DR   InterPro; IPR002637; Ham1p-like.
DR   InterPro; IPR027502; ITPase.
DR   InterPro; IPR029001; ITPase-like_fam.
DR   PANTHER; PTHR11067; PTHR11067; 1.
DR   Pfam; PF01725; Ham1p_like; 1.
DR   SUPFAM; SSF52972; SSF52972; 1.
PE   2: Evidence at transcript level;
KW   Cytoplasm; Hydrolase; Magnesium; Manganese; Metal-binding;
KW   Nucleotide metabolism; Nucleotide-binding; Reference proteome.
FT   CHAIN           1..206
FT                   /note="Inosine triphosphate pyrophosphatase"
FT                   /id="PRO_0000413114"
FT   BINDING         20..25
FT                   /ligand="ITP"
FT                   /ligand_id="ChEBI:CHEBI:61402"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03148"
FT   BINDING         48
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03148"
FT   BINDING         60
FT                   /ligand="ITP"
FT                   /ligand_id="ChEBI:CHEBI:61402"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03148"
FT   BINDING         76..77
FT                   /ligand="ITP"
FT                   /ligand_id="ChEBI:CHEBI:61402"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03148"
FT   BINDING         93
FT                   /ligand="ITP"
FT                   /ligand_id="ChEBI:CHEBI:61402"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03148"
FT   BINDING         152..155
FT                   /ligand="ITP"
FT                   /ligand_id="ChEBI:CHEBI:61402"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03148"
FT   BINDING         175
FT                   /ligand="ITP"
FT                   /ligand_id="ChEBI:CHEBI:61402"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03148"
FT   BINDING         180..181
FT                   /ligand="ITP"
FT                   /ligand_id="ChEBI:CHEBI:61402"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03148"
FT   CONFLICT        157
FT                   /note="V -> M (in Ref. 3; BAD94569)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        190
FT                   /note="S -> F (in Ref. 3; BAD94569)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   206 AA;  22478 MW;  C86C23082A57CAB1 CRC64;
     MAAAAAKAAV VLPRPVTFVT GNAKKLEEVK AIIGNSIPFK SLKLDLPELQ GEPEDISKEK
     ARLAALQVDG PVLVEDTCLC FNALKGLPGP YIKWFLEKLG HEGLNNLLMA YEDKSAYALC
     AFSFSRGPGA EPLTFLGKTP GKIVPARGPT DFGWDPVFQP DGYDQTYAEM AKEEKNKISH
     RYKSLALVKS HFKEAGYVFQ TDDGTI
 
 
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